Suction box



Aug. 14, 1928.

R. H. TAYLOR, JR

SUCTION BOX Filed Jan. 13, 1928 10am Jeri Patented Aug. 14, 1928.

. UNITED STATES PATENT OFFICE.

ROBERT H. TAYLOR, .13., :OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO RICE, BARTON & FALES, INCORPORATED, OF WOIKJES'IER,v MASSACHUSETTS, A CORPO- RATION OF MASSACHUSETTS.

SUCTION Box;

Application filed January 13, 1928. Serial No. 246,606.

This invention relates to a suction box for use in paper making machines.

' The principal objects of the invention are to provide a suction box of a simpler and therefore less expensive form than those heretofore in use and at the same time to provide it of such construction that it will be stronger than the ordinaryform when made of the same we'ghtand thus less liable to get out of order in use.

Reference is to be had to the accompanying drawings in which Fig. 1 is a plan of a suction box constructed in accordance with this invention- Fig. 2 is a longitudinal sectional central view;

Fig. 3 is an end elevation as indicated by the arrow 3 in Fig. 1, and

Fig. 4 is a cross section on the line H of Fig. 1. I

Suction boxes, as heretofore used for paper machine work, are made of rectangular cross section and they are either cast, which makes them heavy and bulky and subject to other difficulties, or else made of plates and structural shapes which require riveting or brazing to connect the parts to gether and necessitates the use of plates of considerable thickness in order to form a long structure like this. Suchcastings are hard to make in perfect form.

This invention is designed to reduce these difficulties and to form the suction box with the least possible amountof metal for its strength and make it in convenient form and in an expeditious manner. In order to ac complish these purposes the walls of the suction box are made of pieces of piping of aluminum, brass or whatever metal it is desired to use. The lengths of pipe are split in two diametrically and each half used for a suction box. 7

In this way an outer Wall 10 is made of one split length of pipe and an inner wall 11 of another length. The other halves of these lengths of pipe are put together in the same way to form another suction box. In this Way a very inexpensive form of metal is'uSed and the bottom and side walls are made all in one piece with a saving in the amount of from each other by spacing strips 12 arranged along the center at the bottom and by two spacing strips 13 at the top. These strips 12 and 13 are continuous from one end to the other and the pipe sections are secured to them in any ordinary way. They not only space the pipe sections apart properly but also strengthen the structure.

The inner pipe 11 is provided along the bottom with perforations 20 at intervals to provide for passage of the liquor therethrough and in the usual way. These perforations are located so as to come on opposite sides of the spacing strip 12 and all arranged so as to come between two fittings 16 no matter what the adjustment.

The

suction box is designed to support a plate 14 which is perforated with finer perforations at 15 throughoutits area.

The adjustable fitting 16 is employed with its adjusting rod 17 which is operated from an end wall 18 which closes the end of the suction box. Another one of these is shown at the other end and the whole thing is mounted on wheels or rollers 19 in the usual way. The liquor is drawn through the sue-- tion box in the usual way and the'fittings at y the end are made to fit the particular form of suction box illustrated herein. The cast metal ends 18, the cast heads 21, and the housings 22 for the Wheels, are made circular and then split diametrically so that each one provides two of them. i

This method of manufacture constitutes a very simple one involving a saving of time and the resulting structure is stronger for its Weight than suction boxes that have been manufactured under the old system. The suction boxes are lighter in weight and therefore easier to handle. Although I have illustrated and described only one form of the invention I am aware of the fact that modifications can be made therein by any person skilled in the art without departing from the scope of the invention as expressed in the claims. Therefore, I do not wish to be limited in these respects but what I do claim is:

1. As an article of manufacture, a suc tion box for the purpose described comprising two pipe sections spaced apart so that the larger one constitutes the bottom of the suction box, and a pair of strips along the top and sides for separating the edges of the two pipe sections and constituting the top of the suction box.

2. As an article of manufacture, a suction box for the purpose described formed of two semi-cylindrical pipe sections, one larger than the other and having means between them at the bottom for permanently spacing them apart so that the larger one constitutes the bottom of the suction box and having a pair of strips at the top and sides for separating the edges of the two pipe sections and constituting the top surface of the suction box.

3. As an article of manufacture, a suction box comprising an outer wall of semi-cylindrical shape and an inner wall of semi-cylindrical shape perforated to allow the liquor to pass therethrough into the space between the two walls and means for spacing the inner wall above the outer wall.

4. In a suction box, the combination with two semi-cylindrical pipe lengths of different sizes, one within the other secured together, of strips secured to them at the top for strengthening the structure.

5. In a suctionbox, the combination with two semi-cylindrical pipe lengths connected together, one within the other, of cast metal ends located within them, castheads, and

housings for the rollers, all made in circular form and split to make two of each.

. 6. Ina suction box, the combination with two semi-cylindrical pipe lengths connected together, one within the other, of ends located within them, and heads made in circular form and split to make two ofeach.

In testimony whereof I have hereunto affixed my signature.

ROBERT H. TAYLOR, J u. 

